Register for liquid-dispensing apparatus



June 14, 1932. J. D. LASATER 1,862,961

REGISTER FOR LIQUID DISPENSING APPARATUS Filed June 8, 1929 6 Sheets-Sheet 1 W IIHMIH J D- Las l er- 1 Li-XSA'YEQ 5 Sh$ets-Sheet FARATUS YEH'SINGAP REGISTER FOR L June 14, 1932. J. D. LASATER 1,862,961

REGISTER FOR LIQUID DISPENSING APPARATUS v O O 1.1-, 1

of 5: 0 7f O 2 o O O O O O O I I avwc-nfo'o lD-basaz er.

June 14, 1932. .1. D. LASATER REGISTER FOR LIQUID DISPENSING APFA BATUS Filed June 8, 1929 6 Sheets-Sheet awuc uh) J .D. L asaz er.

/ attozwm o w A v rm-x6e 14 1932. J. D. LASATER REGISTER FOR LIQUID DISPENSING APPARATUS,

Filed June 8, 1929 a Shama -Sheet 6 :7. 4D. fias z er.

Patented June 14, 1932 FUNII'TEDSTATES PATENT OFFICE JOSEPH'D. LASATER, OF SULPHUR SPRINGS, TEXAS, ASSIGNOR F ONEJJQHIRD TO JOHN 1D. WILLIAMS, 0F SULPHUR SPRINGS, TEXAS REGISTER. FOR LIQUID-DISPENSING APPARATUS Application filed June '8, 1929. Serial No. 369,442.

This invention is an apparatus for indicating when a predetermined quantity of liquid has been drawn from a dispensing apparatus. The invention is designed more particularly for use in connection with the pumps for dispensing gasoline, and has for its object the provision of an apparatus operated by thefflow of the gasoline through'the outlet nozzle tosound an alarm or otherwise signalize the passing of the predetermined quantity.

Figure 1 is a front elevation of the device showing the same connected with the outlet nozzle of a gasoline dispensing pump,

Fig. 2 is a rear elcvationof the same,

Fig. dis a view, partly in plan and partly in horizontal section, on the line 3-3 of Fig. 1, 4

Figs. 4, 5 and 6 are vertical sections taken on the lines 4 1, 55, 66, respectively, in

Fig. 3,

Fig. 7 is'a detail elevation of the main ratchet wheel and the device for checking rebound of the same,

Fig, 8 is a sectional elevation on the line 8-8 of Fig. 7,

Fig. 9 is a plan view of the circuit closer mountedon the discharge nozzle with the top of the casing removed,

Fig. 10 is a longitu 1010 of-Fig. 9,

Fig. 11 is a detail, t

Fig. 12' is a View similar to Fig.4 with the parts in a'diiierent position. t

F lg. 13 is a detail elevation of a trip device Fig. 14 is an end elevation of the structure shown in Figs. 9 and 10, and

Fig. 15 is a diagram.

In thed-rawings, the reference numeral 1 indicates a casing which may be mounted at any convenient point and is equipped with s and will be hereinafter first dinal section on the line i a hinged door 2 whereby the mechanism may be secured against tampering when so desired. The outlet nozzle of the dispensing pump is indicated at 3, a hose 4 being coupled to the nozzle in the usual manner.

In carrying out the present invention, there is provided Within the nozzle 3 a shaft 5 extending axially of the nozzle and journaled in bearings provided therefor in a suitable frame 6 secured within the noz'zle. Upon this shaft 5 between the ends of the frame 6 is secured a worm or screw 7 which is of such diameter that it extends to the peripheral wall of the frame and must, therefore, if unrestrained, be actuated b the gasoline flowing through the nozzle. gne end of the shaft 5 is equipped with a crank 8 and a wrist pin 9 disposed eccentrically upon the crank, and adjacent said end of the shaft a bearing sleeve 10 is fitted through and secured in the wall ofthe nozzle, a rock shaft 11 extending axially through said bearing sleeve and being journaled ther in. To the lower end of the shaft 11 is secured a crank 12 having a pin 13 depending from its free end in the path of the wrist pin 9, as shown clearly in Fig. 10, a collar 100 being fitted around the shaft between the crank 12 and the end of the bearing sleeve to prevent leakage through the sleeve. At the opposite end of the worm is a lug 101 which plays stops 102 on the movement of the shaft to one-quarter of a revolution. Upon the nozzle is secured a casing 1 1 into one end of which the bearing sleeve 10 extends, and intermediate the height between quadrantally spaced t-he frame 6 and thereby limits of this casing 14 is secured a shelf or partition 15 of fiber or other insulating material. Se-

cured upon the shelf 15 adjacent one end thereof are brackets 16 to which are secured resilient contact fingers 17 and 18 which extend longitudinally of the shelf and are normally spaced apart, as shown in Fig. 9. Electrio conductors 19 lead through an opening 20 in the top 21 of the casing 1 1 and are secured tobinding posts 22 on the respective brackets 16. The contact fingers 17 and 18 are equipped with opposed lugs 23 at their free ends and the finger 18 is extended beyond said lug and then bent laterally, as shown at 24,

jacent the respective contact to provide an abutment in the path of a cam or crank 25 secured on the upper end of the shaft 11, as shown and as will be understood. A spring 26 is secured upon the shelf and exerts an upward tension on the crank to hold the collar 100 to the end of the bearing sleeve and eliminate leakage. The extension 24 of the finger 18 acts as a spring on the crank 25 to return the same to normal inactive position, and stop pins 27, arranged adfingers, serve tolimit the movement thereof in an obvious manner. The conductors 19 are brought'to the casin 14 through a cable 28 whichleads from binding posts 29 and 30- within the cas-. ing 1 so that a shunt circuit is formed including the parts just described.

When the machine is idle, the circuit will be broken and the contacts will be separated, as shown in Fig. 9. When, however, the machine is operating and gasoline is flowing through the outlet nozzle, the worm 7 will be given a quarter turn by the initial impact of the fluid so that the wrist pin 9 Will be rocked to bear against the pendent in 13 and rock the crank 12, causing the sha p 11 to turn and the crank or eccentric 25 to press the contact finger 18 toward the contact finger 17 and bring the spaced lugs 23 into contact. The circuit through the motor will be thereby completed and the registering apparatus will operate. When the flow ceases, the parts are restored to initial position under the influence of the spring extension 24, as before stated. It must be understood that the resiliency of the fingers 17 and 18 tends to constantly hold them apart and is sufiicient to separate them as long as no liquid is flowing through the nozzle 4', under which conditions the lug 101 on the screw 7 will rest against the upper stop 102 and the wrist pin 9 will be held in position to instantly actuate the pin 13 and shaft 11 when liquid flows. When liquid flows through the nozzle, the pressure of the li uid u on the screw 7 will rock the screw an the shaft 5 to the position shown in Fig. 14 with the lug 101 against the lower stop 102, thereby closing the circuit through the contact lugs 23, as described, and as lon as the liquid flows its pressure will hold the parts in the stated position, the pressure upon the screw blade or vane acting in opposition to the s rings 17 and. 18.

The current or operating the apparatus may be supplied from any convenient socket and, to that end, a cable 31 is provided equipped with the usual-plug 32 and carrying conductors secured to the binding posts 33 and 34, respectively. The binding posts 29, 30, 33 and 34 are secured upon a block 35 v of insulation secured to one side of a frame 36 which is secured within the casing 1. The several binding posts extend through metal caps or plates 37 and the posts 29 and 33 pass through the same plate so that they are electrically connected. A conductor 38 leads from the lowest plate 37 to one side of the motor 39 which is an electro-magnet mounted upon the frame 36 and cooperating with an armature 40. From the uppermost plate 37, a conductor 41 leads to the opposite side of the motor and conductors 42 lead from the uppermost and intermediate plates 37 respectively to bindin posts 43 at the back of the casing and the firame from which resilient contact fingers'44 rise, said fingers being equipped with In s 45 similar to the lugs 23, previously described. It will be understood that the wires 38, 41 and 42 are soldered or otherwise intimately united to the respective plates 37. One finger 44 extends above the other finger into the path of a slid able and rockable rod 46which is mounted upon the back of the-frame and carries a hammer or clapper 47 which is adapted to sound a bell 48 when actuated. The rod 46 is moved in one direction by a spring 49 to break the circuit and is moved in the opposite direction to closethe circuit bya crank arm 50.

The armature 40 is resiliently supported upon a post 103 by leaf springs 51 at one end and adjacent its opposite end a spring plate 52 rises therefrom to connect it to one end of a lever 53 which has its opposite end pivotally mounted upon a shaft 54 mounted within the frame 36. Carried by-the lever 53 is a friction block or shoe 55, and springs 56 attached to said shoe and the lever normally hold the shoe to the lever in the raised position, the armature being vibrated when the ma net is energized so that the lever will be roc ed. It should be stated at this point that the motor I have employed operates only on alternatin current, the current most generally availafiile being volts, 60 cycle A. C. This current stops and starts, so to speak, sixt times a second, vibrating very rapidly. The shoe or block 55 is of a somewhat eccentric form and a roller 57, carried by the lever, bears upon, the shoe so that upon the downward stroke of the lever the shoe will be caused to bind against a driving wheel 58 secured upon 1 the shaft 54 and thereby actuate said shaft.

the wheel will *continue to rotate under the influence of a heavy flywheel 61 secured upon the shaft 54 immediately adjacent the wheel, as shown clearly in 3. An adjustin rod 62 is secured to the springs 51 and rises t erefrom between the pulley 58 and the flywheel 61 to beengaged by a set screw 63 in the top of the casing so that the tension of the springs a second and the armature is accor ingly attracted and released sixty times may be adjusted and the action of the arma dog 82 has a two-armed body pivoted to the ture 40 thereby nicely regulated. col ar 105 at the junction of the arms, as at Upon the shaft 54, at the front end thereof, 106, one arm being straight and extending is secured a pinion 64 meshing with a gear beyond the periphery of the collar and the 65 carried by a shaft mounted adjacent the other arm being arcuate and lying within the front end of the shaft 54, as will be under-- area of the collar, as shown in Fig. 13. The stood. The gear 65 has a wrist pin 66 which free end of the arcuate arm is provided with is arranged to engage the teeth 67 ofthe main a lateral terminal lug 107 and aspring 108 ratchet wheel. 68 and impart a step by step presses said arm and lug toward the pointer movement to said wheel. A spring-pressed pivot or shaft 81, a stop pin or lug 109 being 75 dog 69 is mounted in the frame adjacent the provided on the collar to limit the movegear 65 and engages the teeth 67 to prevent ment of the arm under the influence of the retrograde movement of the ratchet wheel, spring. Upon the straight arm of the dog as will be understood upon reference to Fig. is pivoted an extension 110 having a back 4. The ratchet wheel 68 carries an eccentric plate .111 adapted to bear against the edge pin or stud 70 which is adapted to engage of the arm and yieldably held to the arm a stop member set according to the time the by a spring 112 coiled around the pivot and apparatus is to run. On the rear side of the having one end engaged with the arm and its ratchet wheel 68 are spaced pins or studs 71 opposite end bearing upon a lug 113 on the Q9 forming a circular series extending entirely extension. By reason ofthis arrangement, 95

around the wheel and these pins engage an if the pin 70 engages the back of the extenescapement to prevent rebound of the ratchet sion, the dog and the pin will move in uniwhe'el. The escapement consists of a lever son, but if the pin engages the front of the 72 pivoted at its lower end to the frame and extension the extension will yield and the having a tooth 73 at its upper end. A bridge pin ride past the same. The rear end of the piece 7 1 extends from the lever below said shaft 81 is hollow and receives the front end tooth inwardly with respect to the wheel 68 of the axle or shaft 114 upon which ratchet and is of ofl'set formation so that it will clear wheel 68 is secured, the two shafts being axthe pins 71, as will be understood upon refially alined. Loosely mounted upon the axle C3 erence to Figs. 7 and 8. Carried by and risor shaft 114 is a grooved collar 83 in which ing from the bridge piece 74 is a post 104 is engaged a fork 84 upon the inner end of having a pair of teeth 75 which are opposed a lever 85 fulcrumed in a bracket 86 upon to the tooth 7 3 and disposed in staggered the frame and having its upper end hooked relation thereto so that the teeth will alterand turned laterally, as shown at 87, and. nately engage the pins 71 and eliminate realso formed with a cam 115 arranged to ride bound of the wheel when it is actuated. A against the pawl 69 and release the same, leaf spring 90 disposed between the post the hook 87 assuming a position above the 104 and the rear side of the wheel 68 funcpawl to prevent its being thrown violently tions as an anti-rattler, and a volute spring outwardly'to a position from which it will 43 91 having its ends secured to the frame and not readily return to 'engage the ratchet 105 v the hub of the wheel 68, respectively, moves wheel. A spring 88 bears against the upper the wheel toward the zero position. end of the lever 85 and the lug 107 on the dog Disposed coaxially with the ratchet wheel 82 normally is disposed between the sleeve 68 at the front of the frame is a dial 76 which 83 and the back of the dial to hold the sleeve may be calibrated in any desired manner and, toward'the ratchet wheel 68. When the dog of course, is intended to have each gradua- 82 is rocked, the lug 107 is moved beyond the tion represent one gallon of the liquid being circumference of the sleeve, whereupon the dispensed. 'A pointer 77 isarranged in front spring 88 expands and'rocks the lever 85, of the dial 76 and is set by manipulation of causing the cam 115 to disengage the pawl 69 a nut or knob 78 which locks the pointer on fromthe wheel 68. The spring 91, which its shaft, a spacer 79 being disposed between was wound by the step by step rotation of the pointer and the dial. A stop pin 80prothe wheel, then at once unwinds and turns jects from the face of the dial near the top the wheel in the reverse direction, setting it thereof and immediately adjacent the zero at zero before the gear has made a compoint of the scale to limit the movement of the plete revolution. pointer. Fixed to the rear end of the shaft The ratchet teeth of the wheel 68 are inor pivot 81 upon which the pointer is secured terrupted at one point, as shown at 89, to conis a collar 105 upon which is pivoted the stop stitute a safety device, the rotation of the member or dog 82 which is set at any desired wheel and the operation of the machine being 59 point inthe path of the stud by the manipstopped whenever the pin 66 on the driving ulation of the pointer so that when the ratchet gear engages the notch or blank 89. If the wheel has been rotated through the predeterpointer should be set at 25, for instance, and, mined arc the pin 70 will impinge against after the machine has started to operate, the v the dog 82 andt ereby activate devices which pointer should be thrown back to 10, the will cause the bell 48 to be sounded. The machine would not give. a signal when twenty-five gallons had passed through the for which purpose the indicator may beset nozzle but would continue to count gallons at one of the larger numbers, say 75, and an until the pin 66 met the space 89 when the extra gallon given free to the customer who l ratchet. wheel would stop. To correct this buys theseventy-fitth gallon. The signal 2 trouble, the pointeris turned to the right will announce the passing of the seventy-fifth 7G until it. strikes the pin 80 and then turned gallon and will not be actuated until the u back to the graduation S8 at which point seventy-fifth gallon has passed, whereupon the signal will be operated. The pointer may the then customer will be thereby informed then be set at any desired graduation and that he is entitled to one free gallon. the machine will operate properly. The rathet wheel 68 is fed forward until In addition to the trip pin 70, a stop pin the pin 70 impinges upon the dog 82 and re 92 projects from the front side of the main leases the sleeve 88, as stated, whereupon the l ratchet wheel 68, and this pin arrests the spring 91. at once rotates the wheel in the 1 return movement of the ratchet wheel by iinopposite direction until the pin 9:2 comes into pinging against the lower end of abracket contact with the bracket 93. As the pin 92 i or arm 93 which depends from the top of approaches the bracket, it will ride upon the the frame 36. A latch 9+1 is pivoted 0n and lower portion of the latch 9t and push the depends below the bracket 93 and its lower same aside to facilitate movement of the arm end is held to the path of t e p n 9 y 11 39, then impinge against the lower edge of to spring 95. Near its lower end. the latch is the arm 99 and. rock the same upwardly so formed with a cam shoulder 96 on its edge that just as the in engages the bracket 93 presented to the pin 9:2, and above said cam it will be free of the latch and the pin 116 on the same er ge is a ledge or shoulder 97 will be above the shoulder 97, 'whereupon from the tip of which an inclined surface the latch swings under the influence of the 8 eXtc tlo rd l t0 c g into the spring to engage the shoulder 97 under the 90 edge of the latch. :r rocking arm 99 is dispin 116 and thereby hold the arm 99 in the posed between the latch and the bracket 93 raised position. Tthen the arm 99 is swun and is equipped with a lateral lug 116 which a dly, th shaft 120 is rock d and the bears against the edge of the latch and, at crank 50 caused to push the slide 46 to close times. rests on the ledge 97. The free e d the circuit through the contact lugs 4.5,wherel Of the firm 99 has ll' Spaced g 17 upon the bell will ring and will continue to between Which 1S 3 lug 118 on the l)l2lCli0t 93, ring until the pin 92 is noved downwardly and an SClCllilODfil lug 119 on the blllPltQt r the circuit, through the notor is broken above the arm limits the upward movement U d wnward movement of the pin 92, thereof. The arm 99 is secured on a rock th i ill id upon th cam h ld 96 shaft which GXtEIKlS l IOl'll front to I'Ottl of the latch and push the latch aside so as of the frame and upon the rear end of which to release the arm 99 whi h ill thereupon the previously mentioned crank 50 is secured. swing d wnward and impart reverse move- Neal' 611d ()f the IOCklllg Slllile t6. fill arm nent to the crank 50 permitting the ontact 121 is fixed thereon and projec ts forward l 45 t separaty I l f to engage a hook 123 p When the shunt circuit is closed through .2 the free end of the armature: the conductors 19 bv the coming together of i spring 123 secured in the frame and proth t t 23, th r t, fl ws through jccting under the arm preventing rattling one i f th bl :31 t th t 34; a d and tend g C Y t0 lift Elle free end thence through the lowest plate 37 and wire no above the bill of the hook so that it will ent one id f th magnet or otor, Fr m g y tllcl'eoller when the Slide 46 is the motor. the current flows through wire shifted endwise by the crank 50, and a Stop 4-1 to the top plate 37 thence through the 1% being l 011 the frame to Prevent shunt conductors 19 and central plate 37 to the arm 121 dr pping S0 il that it Cannot post 33 whence it passes through cable 31 engage over the l100 1 to the source. hen the contacts 45 are Th machine measures by time, one gallon brought together by the described action of flowing through the deliv ry nOZZlQ v y the slide 46, one side of the circuit Will be, time the main ratchetwheel is fed forward a before, through the post 34 and wire 38 one tooth. and the parts being adjusted so t one id f the motor d f th oppothat the wheel is fed forward one step every it id of th motor through the wire 41 four seconds which is the period usually ieto the top plate 37. The current then flows quired for the low of one gallon of gasoline. over the upper. wire 42 and its post 43 to Oneniethod or" usingthe machine is to set the and through the fingers 4-4 and contacts 45 pointer at the graduation indicating the and thence through the lower wire 42 to the quantity desired by the customer, in which central plate 37 whence it passes through the 1 event the signal will be sounded when the cable 31 to the source. Thus, there will be indicated quantity has been delivered. The a circuit through the motor even though the 65 machine is designed principally, however, for first-formed shunt circuit be broken by the use in promoting sales at agasohne station stoppage of the flow of gasoline and the bell neeaaei will be sounded until the descent of the pin 92 permits the shaft 120 to rock and swing the crank 50 in a direction away from the contacts 45, whereupon the contacts will separate. It will be understood that when the bell circuit is closed through the motor the armature will vibrate and as'the arm 121 is then resting on the hook 122 at the end ofthe armature, the rod 46 will berocked I55mg the hammer 47 caused to play on the The position of-the dog 82 corresponds to the position of the pointer 7 7. If the pointer be set at 75 on the dial and then moved back to 1 before seventy-five gallons have been delivered, the sounding of the bell will not truly indicate the delivery of seventy-five gallons. When, the pointer is moved back to 1, as suggested, the extension 110 will be carried past the pin and if the pino66 happens to be engaged in the teeth of the wheel 68, the machine will not trip. If, however, the pin 66 happens to be not engaged with the teeth of the wheel 68, the machine will trip and the bell will. be sounded. If the pin'66 is engaged, the machine will not trip and if the pointer be left on l,"the wheel 68will continue to operate until the pin 66 engages in the vacant space or notch 89, whereupon the wheel 68 will stop but the wheel 65 may continue to rotate, the pin 66 merely engaging in the notch 89 at each rotation of the gear wheel. To restore the machine to accurate working condition, moved clockwise until it impinges against the stop pin 80 and is then moved back to the graduation 88 on the dial, thereby bringing the dog 82 into contact with the trip pin 70, whereupon the lever 85 will be rocked and the pawl 69 released, as previously described. The wheel 68 will then return to zero and sound the bell. The pointer may then be again set at and the wheel 68 may be restored to the position it occupiedbefore being disturbed by temporarily disconnecting the conductors 19 and bridging the posts 29 and 30.

When the machine is tripped and the lever 85 rocked, as previously described, to release the dog 69 from the wheel 68, the lever is held in such tripped position until the shunt circuit is again closed, whereupon the driving wheel 65 will be rotated and the pin- 66, of course, caused to travel with the wheel. The pin 66 will then be caused to ride against the deflected hook 87 at the upper end of the lever 85 and rock the lever so that the collar or sleeve 83 will he slid away from the dog 82 to its initial or normal position and the spring 108 will act upon the dog so as to throw it into the position between the sleeve and the disk 105, thereby restoring the parts to the first described position.

Having thus described the invention, I claim:

the pointer is 1. Means for measuring a liquid including a conduit through which the liquid may flow, an'impeller arranged within the conduit and having an eccentric wrist pin, a pair ofcona tact fingers arranged upon the conduit, one of. said fingers being extended beyond the other finger and formed into an abutment, a rock shaft mounted in the wall of the conduit and provided at its upper end witha crank engaging said abutment and at its lower end with a crank engaging said abut ment and at its lower end with a crank arranged in the path of the wrist pin, a signal, and an-electric circuit including the signal and said contact fingers whereby the signal will be energized at the end of a predetermined interval.

2. Means for measuring a liquid comprising a dial, a pointer cooperating with the dial, a stop connected with the pointer to be set thereby, a wheel arranged coaxially with the dial, apin projecting therefrom into a, path including the stop whereby to engage the stop and arrest the movement of the wheel,

means for intermittently moving the wheel,

and means controlled by flow of the liquid for driving the last-mentioned means.

3. Means for measuring a liquid including a measuring wheel, a stopmechanism having on member mounted on the wheel and another member in the path of said member on the 'wheel, a vibratory electric motor, means controlled by the flow of the liquid for energizing said motor, gearing driven by the .motor for intermittently rotating the indica tor wheel, and means activated by the stop mechanism for rendering said gearing inac tive and permitting reverse movement of the wheel.

4. Means for measuring a liquid including a signal, an electric circuit for operating-the signal, a control wheel, means controlled by the flow of the liquid to intermittently move said wheel in one direction, means for renderin said means inactive at a predetermined point'in the rotation of the wheel, means for imparting reverse movement to the wheel, and means controlled by the reverse movement of the wheel for activating the si a1.

5. In means for measuring a liqui an electromagnet, means controlled by the flow of the liquid for energizing said magnet, a vibratory armature for the magnet, a drivin wheel, a lever pivoted concentric with said driving wheel, connections between the lever and the armature, and a shoe carried 'by 'the lever and adapted to frictionally enwith the driving wheel, a shoe arranged eccentric to the lever and carried thereby, a yieldable support for the shoe on the lever,

' wheel will be actuated and means for vibrating the lever whereby upon one stroke of the lever the driving by the shoe and upon the other stroke of the leverthe shoe will be free of the driving wheel.

7. In means for measuring a liquid, a driving wheel, a lever mounted concentrically therewith, electro-magnetic means for vibrating the lever, and a shoe yielda-bly supported by the lever in position to engage the wheel whereby upon movement of the lever in one direction the driving wheel will be actuated and upon movement in the other direction the shoe will be free of the wheel.

8. In apparatus for the purpose set forth, a conduit through which a liquid may flow, a shaft mounted axially in the conduit, a spiral blade on said shaft, stops on the inner wall of the conduit spaced circumferentially thereof, a cooperating projection on the blade between the stops to limit the turning of the blade and the shaft, and an electric circuit opened and closed by the turning of the blade able dog in the path and shaft.

9. In apparatus for the purpose set forth, a control wheel, means controlled by the flow of a liquid for rotating the wheel, a dial coaxial with the wheel, a pointer movable over the dial, a dog movable with the pointer and mounted for rocking movement relative to the pointer, a projection on the wheel adapted to engage and rock the dog, and means whereby upon rocking the dog reverse rotation of the wheel will be efl'ected.

10. In apparatus, for the purpose set forth, a main ratchet wheel, means controlled by the flow of a liquid to impart a step by step rotation to the wheel, a pawl normally engag ing the wheel to prevent reverse movement thereof, a projection on the wheel, a shift of said proj ection, means for imparting reverse rotation to the wheel and a rocking arm having one end engaged with the shiftable dog and its opposite end provided with a cam arrangement to ride under the pawl whereby upon engagement of the dog by the projection the pawl will be released and reverse rotation of the wheel effected.

11'. In apparatus for the purpose set forth a main wheel, a signal, a rock shaft, a crank on said shaft adapted to activate the signal, jection on the main wheel to engage said arm whereby upon movement in one direction the signal will be activated and upon movement in the opposite direction the signal will be rendered inactive.

12. In apparatus for the purpose set forth, a main wheel, a signal, a rock shaft, a crank on said shaft adapted to activate the signal, an arm on the rock shaft, a projection on the main wheel to engage said arm whereby upon movement in one direction the signal will be activated and upon movement in the opposite an arm on the rock shaft, and a prodirection the signal will be rendered inactive, and a latch pivoted adjacent the arm to engage the same and support it in raised osition and having its free end in the pat of the projection to be engaged with and released from the arm thereby.

13. In apparatus for the purpose set forth, a main wheel, a signal, a rock shaft, a crank on said shaft ada ted to activate the signal, an arm on the rock shaft, a projection on the main wheel to engage said arm whereby upon movement in one direction the signal will be activated and upon movement in the opposite direction the signal will be rendered inactive, a vibratory motor, a hook on the moving member of the motor, and an arm extending from the signal mechanism to engage said hook.

14. In apparatus for the purpose set forth, a main ratchet wheel having peripheral teeth andhaving a blank space at the location of one tooth.

15. In apparatus for the purpose set forth, a mainwheel, means for rotating the same, al'circular series of spaced studs on the rear side of the wheel, and an esoapement lever having opposed staggered teeth engaging said studs.

.In testimong whereof I afiix my si ature. JOSE F H D. LASATER. 1.. 5. 

